Spanish researchers reviewed 18 studies on time-restricted eating in athletes and active individuals, finding early evidence of potential benefits. The most common approach studied was the 16:8 protocol, where eating occurs within eight hours and fasting extends 16 hours. Elite cyclists following this pattern for four weeks lost 2% body weight while showing 4% improvement in maximum power output relative to body mass. A small study of 11 non-athletes found increased levels of SIRT1, a gene regulating aging processes, and proteins involved in cellular maintenance after just four to five days. Athletic performance remained stable or improved across multiple studies lasting three to 98 days. However, researchers from Barcelona emphasize evidence remains limited, with most trials being small and short-term, particularly involving athletes. (Story URL)